/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.execution;

import com.facebook.presto.spi.ConnectorSession;
import com.facebook.presto.spi.PrestoException;
import com.facebook.presto.spi.StandardErrorCode;
import com.facebook.presto.spi.WarningCollector;
import com.facebook.presto.spi.plan.PlanChecker;
import com.facebook.presto.spi.plan.PlanNode;

import java.util.concurrent.atomic.AtomicBoolean;

import static com.facebook.presto.spi.StandardErrorCode.QUERY_REJECTED;

public class TriggerFailurePlanChecker
        implements PlanChecker
{
    public static final StandardErrorCode FAILURE_ERROR_CODE = QUERY_REJECTED;
    public static final String FAILURE_MESSAGE = "Plan validation failure triggered";
    private final AtomicBoolean triggerValidationFailure;

    public TriggerFailurePlanChecker(AtomicBoolean triggerValidationFailure)
    {
        this.triggerValidationFailure = triggerValidationFailure;
    }

    @Override
    public void validate(PlanNode planNode, WarningCollector warningCollector, ConnectorSession session)
    {
        if (triggerValidationFailure.get()) {
            throw new PrestoException(FAILURE_ERROR_CODE, FAILURE_MESSAGE);
        }
    }
}
